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1. WO2015131517 - DIRECT-CURRENT DE-ICING DEVICE BASED ON VOLTAGE SOURCE TYPE CONVERTER AND CONTROL METHOD THEREFOR

Publication Number WO/2015/131517
Publication Date 11.09.2015
International Application No. PCT/CN2014/087160
International Filing Date 23.09.2014
IPC
H02G 7/16 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
7Overhead installations of electric lines or cables
16Devices for removing snow or ice from lines or cables
CPC
H02G 7/16
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
7Overhead installations of electric lines or cables
16Devices for removing snow or ice from lines or cables
H02M 1/088
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1Details of apparatus for conversion
08Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
088for the simultaneous control of series or parallel connected semiconductor devices
H02M 1/32
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1Details of apparatus for conversion
32Means for protecting converters other than automatic disconnection
H02M 2001/325
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1Details of apparatus for conversion
32Means for protecting converters other than automatic disconnection
325with means for allowing continuous operation despite a fault, i.e. fault tolerant converters
H02M 2007/4835
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
7Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
42Conversion of dc power input into ac power output without possibility of reversal
44by static converters
48using discharge tubes with control electrode or semiconductor devices with control electrode
483Converters with outputs that each can have more than two voltages levels
4835comprising a plurality of cells, each including a switchable capacitor, the capacitors having a nominal charge voltage which corresponds to a given fraction of the input voltage, the capacitors being selectively connected in series to determine the instantaneous output voltage
H02M 7/5387
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
7Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
42Conversion of dc power input into ac power output without possibility of reversal
44by static converters
48using discharge tubes with control electrode or semiconductor devices with control electrode
53using devices of a triode or transistor type requiring continuous application of a control signal
537using semiconductor devices only, e.g. single switched pulse inverters
5387in a bridge configuration
Applicants
  • 南方电网科学研究院有限责任公司 CHINA SOUTHERN POWER GRID TECHNOLOGY RESEARCH INSTITUTE CO., LTD [CN]/[CN]
Inventors
  • 傅闯 FU, Chuang
  • 饶宏 RAO, Hong
  • 汪娟娟 WANG, Juanjuan
  • 许树楷 XU, Shukai
Agents
  • 广州粤高专利商标代理有限公司 YOGO PATENT & TRADE MARK AGENCY LIMITED COMPANY
Priority Data
201410083411.107.03.2014CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) DIRECT-CURRENT DE-ICING DEVICE BASED ON VOLTAGE SOURCE TYPE CONVERTER AND CONTROL METHOD THEREFOR
(FR) DISPOSITIF DE DÉGIVRAGE À COURANT CONTINU BASÉ SUR UN CONVERTISSEUR DE TYPE À SOURCE DE TENSION ET SON PROCÉDÉ DE COMMANDE
(ZH) 基于电压源型换流器的直流融冰装置及其控制方法
Abstract
(EN)
A direct-current de-icing device based on a voltage source type converter, comprising a connective reactor, a modular multilevel converter, a smoothing reactor, a de-icing switch blade, a de-icing bus and a de-icing alternating-current line, wherein an alternating-current side of the modular multilevel converter is connected to an alternating-current side bus through the connective reactor, an insulating switch blade and a circuit-breaker, and a direct-current side thereof is connected to the de-icing alternating-current line through the smoothing reactor, the de-icing switch and the de-icing bus. The direct-current de-icing device does not need a specific transformer, and makes full use of the characteristics of a full H-bridge module capable of outputting three module voltages, i.e. a positive module voltage, a zero module voltage and a negative module voltage, so that both the voltage and the current at the direct-current side of the modular multilevel converter is continuously adjustable between a rated value and zero. A set of direct-current de-icing devices can satisfy the de-icing demands of a plurality of power transmission lines with different length and different resistivity, so that the quality of alternating-current electric energy in all operating conditions can be guaranteed. The control method for the direct-current de-icing device is simple and convenient.
(FR)
L'invention concerne un dispositif de dégivrage à courant continu basé sur un convertisseur de type à source de tension, comprenant un réacteur de connexion, un convertisseur modulaire à niveaux multiples, un réacteur de lissage, un couteau de contact de dégivrage, un bus de dégivrage et une ligne de courant alternatif de dégivrage, un côté courant alternatif du convertisseur modulaire à niveaux multiples étant connecté à un bus côté courant alternatif au moyen du réacteur de connexion, d'un couteau de contact isolant et d'un disjoncteur, et son côté courant continu étant connecté à la ligne de courant alternatif de dégivrage au moyen du réacteur de lissage, du couteau de contact de dégivrage et du bus de dégivrage. Le dispositif de dégivrage à courant continu n'a pas besoin de transformateur spécifique, et fait pleinement usage des caractéristiques d'un module de pont en H complet capable de délivrer en sortie trois tensions de module, c'est-à-dire une tension positive de module, une tension nulle de module et une tension négative de module, de sorte qu'à la fois la tension et le courant au niveau du côté courant continu du convertisseur modulaire à niveaux multiples sont réglables en continu entre une valeur nominale et zéro. Un ensemble de dispositifs de dégivrage à courant continu peut satisfaire les demandes de dégivrage d'une pluralité de lignes de transport d'électricité de longueur et de résistivité différentes, de sorte que la qualité de l'énergie électrique à courant alternatif dans toutes les conditions de fonctionnement peut être garantie. Le procédé de commande du dispositif de dégivrage à courant continu est simple et pratique.
(ZH)
一种基于电压源型换流器的直流融冰装置,包括连接电抗器、模块化多电平换流器、平波电抗器、融冰刀闸、融冰母线和融冰交流线路,其中模块化多电平换流器的交流侧通过连接电抗器、隔离刀闸和断路器连接在交流侧母线上,直流侧通过平波电抗器、融冰刀闸、融冰母线与融冰交流线路连接。该直流融冰装置不需要专用变压器,充分利用了全H桥模块可输出正、零、负三种模块电压的特性,使得模块化多电平换流器直流侧电压、电流均可在额定值与零之间连续可调;一套该直流融冰装置可满足多条不同长度、不同电阻率输电线路融冰的需要,在所有运行工况中,交流电能质量均可得到保证。该直流融冰装置的控制方法简单方便。
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